Historically, the terms Astral Projection and OBE refer to exactly the same thing.
Nowadays, the term astral projection is sometimes solely used to refer to the notion of projecting to ``nonphysical`` astral realms, whereas the term OBE may refer either to a projection into these other realms or to the classic experience of finding yourself in ``a second body`` in what appears to be normal physical reality, but is called the "real time zone".
In practice, however, these terms are still used interchangeably.
For more information on Astral Projection it would be best to start by reading many of the online and offline resources on Astral Projection and Out of Body Experiences. See the post below for some helpful website links.
Also, remember to use the Astral Pulse search engine as well.
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Here are a few links for those interested in researching various astral projection and out of body experience related websites:
http://www.monroeinstitute.org/
http://www.robertpeterson.org/
http://www.out-of-body.com/
http://www.bwgen.com/article_mastering_astral_projection.htm
http://www.victorzammit.com/book/chapter16.html
and information on focused attention can be found at Bruce Moen's website here:
http://www.afterlife-knowledge.com/
Most of the above sites also have links to similar websites. Happy searching! (http://smilies.sofrayt.com/fsc/notebook.gif)
Nick
Also for two great free mpeg downloads Abyss and Boxed Nirvana II see: http://gnomad.info/index.htm